no time in getting to terra firma: the animal had evidently only been stunned by the shot. In this lake I found some curious aquatic plants, such as a new species of _Cabomba_ (_C. Piauhyensis_, Gardn.), a fine yellow-flowered _Jussiæa_ (_J. sedoides_, Humb.), first found by Humboldt in lakes in New Granada; it floats on the water, and the leaves which are small, all reach the surface, and form round the axis of the plant a dense circle, which at a distance appears like a large entire floating leaf. Specimens of a _Chara_ and a _Potamogeton_ were also collected; both interesting, from belonging to genera common to South America and Great Britain. On the 31st, we left Algodoes early in the morning, and after a ride of about three leagues, over a dry flat Chapada, we arrived at Golfes, a single house situated on a hill near a small marsh, in which grows a great number of Buriti palms; we halted by the side of this marsh, under a large Cashew tree. In the afternoon, another journey of two leagues and a half, brought us to a small uninhabited house, at a place called Retiro Alegre, situated in a beautiful valley, skirted by high hills, and abounding in Buriti palms, the leaves of which afforded shelter to vast numbers of the orange-breasted Maccaw (_Canindé_). At this place I found a little black fellow, waiting my arrival to act as guide to the next fazenda (Genipapo), which was five leagues and a half distant. He was sent by Captain Valentim Pereira da Silva, whom I met at Algodoes, on his way to visit his son, to whom the country through which we were then passing, belonged. When this old man knew that I was the person who had performed several cures in Oeiras, he was very desirous that I should visit his son, who was in a bad state of health; and as his house was only a few leagues out of our direct course, I consented to do so. About half a league from the fazenda the son himself met us. The estate of Genipapo belongs to him, and we remained there for the night; but he went to another, two leagues further on, called Canavieira, at which he himself resides.